Patents by Inventor Godai KITAYAMA

Godai KITAYAMA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Fuel cell electrode catalyst, method for selecting the same, and fuel cell including the same
    Patent number: 11901565
    Abstract: A fuel cell electrode catalyst includes: catalyst metal particles containing at least one of platinum or a platinum alloy; and support particles supporting the catalyst metal particles. The crystallite size 2r obtained from an X-ray diffraction image of the catalyst metal particles is 3.8 nm or less, where r represents a crystallite radius of the catalyst metal particles obtained from the X-ray diffraction image. The amount of CO adsorption Y (mL/g-Pt) on the fuel cell electrode catalyst satisfies Y?40.386/r+1.7586.
    Type: Grant
    Filed: March 9, 2022
    Date of Patent: February 13, 2024
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, CATALER CORPORATION
    Inventors: Toshihiro Ikai, Tomohiro Ishida, Godai Kitayama, Yousuke Horiuchi
  • Fuel cell electrode catalyst, method for selecting the same, and fuel cell including the same
    Patent number: 11715833
    Abstract: A fuel cell electrode catalyst includes catalyst metal particles and electrically conductive support particles supporting the catalyst metal particles. In the fuel cell electrode catalyst, a proportion of a surface area occupied by the catalyst metal particles with particle sizes of 4.5 nm or less to a surface area of the catalyst metal particles calculated from a transmission electron microscope image is 5% or less.
    Type: Grant
    Filed: March 8, 2022
    Date of Patent: August 1, 2023
    Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, CATALER CORPORATION
    Inventors: Toshihiro Ikai, Tomohiro Ishida, Godai Kitayama, Yousuke Horiuchi
  • FUEL CELL ELECTRODE CATALYST, METHOD FOR SELECTING THE SAME, AND FUEL CELL INCLUDING THE SAME
    Publication number: 20220293966
    Abstract: A fuel cell electrode catalyst includes: catalyst metal particles containing at least one of platinum or a platinum alloy; and support particles supporting the catalyst metal particles. The crystallite size 2r obtained from an X-ray diffraction image of the catalyst metal particles is 3.8 nm or less, where r represents a crystallite radius of the catalyst metal particles obtained from the X-ray diffraction image. The amount of CO adsorption Y (mL/g?Pt) on the fuel cell electrode catalyst satisfies Y?40.386/r+1.7586.
    Type: Application
    Filed: March 9, 2022
    Publication date: September 15, 2022
    Inventors: Toshihiro IKAI, Tomohiro ISHIDA, Godai KITAYAMA, Yousuke HORIUCHI
  • FUEL CELL ELECTRODE CATALYST, METHOD FOR SELECTING THE SAME, AND FUEL CELL INCLUDING THE SAME
    Publication number: 20220293967
    Abstract: A fuel cell electrode catalyst includes catalyst metal particles and electrically conductive support particles supporting the catalyst metal particles. In the fuel cell electrode catalyst, a proportion of a surface area occupied by the catalyst metal particles with particle sizes of 4.5 nm or less to a surface area of the catalyst metal particles calculated from a transmission electron microscope image is 5% or less.
    Type: Application
    Filed: March 8, 2022
    Publication date: September 15, 2022
    Inventors: Toshihiro IKAI, Tomohiro ISHIDA, Godai KITAYAMA, Yousuke HORIUCHI